49ers rookie safety Brown misses practice with knee sprain

SANTA CLARA — Rookie safety Ji'Ayir Brown was not scheduled to practice Wednesday due to a knee injury that 49ers coach Kyle Shanahan labeled as a "concern." Brown's injury was not immediately known after the 49ers' game Monday night against the Baltimore Ravens. Meanwhile, the 49ers' depth along their offensive line could be tested in a crucial Week 17 matchup. When the 49ers begin on-field preparations Wednesday to face the Washington Commanders, three key members of the offensive line were not fully cleared to practice. All-Pro left tackle Trent Williams, who usually takes Wednesdays off anyway, would be able to take part in limited practice, Shanahan said. He sustained a groin injury in the 49ers' 33-19 loss to the Baltimore Ravens. Williams' status for the game to face his old team will not be determined until later in the week. Backup tackle Jaylon Moore would be the 49ers' first option to replace Williams, but he was not available to practice after being placed in the NFL's concussion protocol. His status for Sunday's game is also uncertain. The 49ers also do not have left guard Aaron Banks available after he aggravated a toe injury that kept him out of two games last...